If you achieve the speed of light which is quite impossible your will never receive a reply least you slow down to less than the speed of light. However that is not “gonna” happen unless you are on the Stare-ship Enterprise that defies all known physics.
I personally think our galaxy and universe is full of life. Only physics is the reason we do not have contact today. In the advance of science we only came out of caves 20,000 years ago. Other species are without doubt out their with science millions of years beyond ours. They have not contacted us because simple physics of interstellar travel make it impossible. As our science becomes better we may well detect their electromagnetic transmissions. I would suspect they are thinking the same thing, “are we alone.”
But even more sad would be a species that knows they are not alone and does not really give a damn as we are so far beneath them to be nothing but strange curiosities.
“I personally think our galaxy and universe is full of life. Only physics is the reason we do not have contact today. “
Mmm...God restricted us with physics to keep us from seeing the glory of his wonder until his appointed time.